Help with error codes

[crchinzo]

What should be checked for these error codes?
The ETC light comes on occasionally, and the battery voltage fluctuates between 13.2V and 14.0V.

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[HeN2O2]

It looks like communication errors caused by a low/bad battery. Battery voltages between 13.2V and 14.0V indicate your alternator is charging the battery. If you have ESS, check both batteries. Communication errors caused by a bad battery or electrical connection yield a large variety of phantom error codes.

For a Jeep JLU, a normal battery voltage reading while driving is typically between 12.5V and 14.5V. When the engine is running, voltages around 13.7V to 14.7V are considered normal, while a fully charged battery at rest should measure about 12.6V to 12.8V.

 

[Dyolfknip74]

do you have an aux battery? Change it. If not, swap out the green connector behind glove box. It is known to have cold solders as well.

 

[mwilk012]

Have you done any other work to the vehicle recently?

Do you have any reason to belief that the codes all came up at the same time?

 

[crchinzo]

I replaced:

• New alternator
• New auxiliary battery
• New main battery
• New throttle body
• New low-pressure fuel pump

All other fault codes have been cleared. Now only P062A remains.

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